Not sure if you can't read, but the blog post essentially says "Haml Sucks for Content" (title) and "Haml is for Layout & Design" (2nd headline) which is an entirely different thing.Even in the conclusion it says "What I hope is clear is that if your job is to produce content, then Haml is probably not the template language for you."

Other than that it's an interesting post and if I ever start with web dev and use HAML then I'll definitely come back to it.